Trip to the center of the galaxy? Sure!
The amazing thing is that every atom in your body came from a star that exploded. And, the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics: You are all stardust. You couldn’t be here if stars hadn’t exploded, because the elements - the carbon, nitrogen, oxygen, iron, all the things that matter for evolution - weren’t created at the beginning of time. They were created in the nuclear furnaces of stars, and the only way they could get into your body is if those stars were kind enough to explode. So, forget Jesus. The stars died so that you could be here today.
- Lawrence Krauss, "A Universe from Nothing"
As someone who's constantly explaining various things about the universe to whoever will listen, I feel everyone should watch this video:
I sometimes feel that I don't spend half as much time looking at things on Earth than I spend looking up at the sky. I'm okay with that. I've learned to stop walking while I look up, which means I no longer run into cars, people, lamp posts, and other things.
- Lawrence Krauss, "A Universe from Nothing"
As someone who's constantly explaining various things about the universe to whoever will listen, I feel everyone should watch this video:
Click to viewI sometimes feel that I don't spend half as much time looking at things on Earth than I spend looking up at the sky. I'm okay with that. I've learned to stop walking while I look up, which means I no longer run into cars, people, lamp posts, and other things.